new term: carpel anlagen

[Pankaj Jaiswal]

I am not an expert on this. Therefore please read the text from the 
citation below. Carpel anlagen is a presumptive region. Primordium comes 
after the anlagen is recognized in terms of development.


as far as definition of anlagen is concerned take a look at this

Of German origin the term anlagen refers to any group of relatively 
undifferentiated cells that is destined to become a particular group of 
differentiated cells at a later time in development. It is used to 
identify distinct cell groups in fly development and also in vertebrate 
development for example the "optic anlagen" is the group of cells that 
will become the eye in many vertebrates. The term is related to 
fatemaps, defined cell lineages, and differentiation.
www.smbs.buffalo.edu/bch/Courses/bch512/definitions2.htm

Pankaj

katica at acoma.stanford.edu wrote:

> 
> Pankaj,
> 
> I must admit, never heard of 'carpel anlagen', but how is this different 
> from 'carpel primordium'?
> 
> Isn't 'primordium' what 'analgen' means ? (just looking at Merriam 
> Webster on-line)
> 
> Katica
> 
> On Tue, 14 Feb 2006, Pankaj Jaiswal wrote:
> 
>>
>> I need a new term to describe expression of DL gene in rice. The term 
>> is carpel anlagen.
>>
>> definition: A presumptive region (carpel anlagen) on the floral 
>> meristem, where carpel primordia would initiate.
>> ref: PMID: 14729915
>>
>>
>> Here is the cited text from
>> Yamaguchi et al, Plant Cell 16:500-509 (2004)
>> The YABBY Gene DROOPING LEAF Regulates Carpel Specification and Midrib 
>> Development in Oryza sativa
>> http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14729915&dopt=Abstract 
>>
>>
>> 'DL expression was detected first in a few cells in the flower 
>> meristem at the lemma side (Figure 4E) and then in cells at the flank 
>> of the meristem (Figure 4F). These DL expression domains corresponded 
>> to the presumptive region (carpel anlagen), where carpel primordia 
>> would initiate. Shortly after this expression, carpel primordia began 
>> to form. At this stage, DL was expressed specifically and uniformly in 
>> carpel primordia (Figures 4G to 4I). No expression was detected in the 
>> flower meristem (Figures 4E and 4F) or the ovule primordium (Figures 
>> 4G to 4I). By contrast, expression of DL was not observed in dl-sup1 
>> mutants throughout flower development (data not shown). Thus, the 
>> expression domains of DL are restricted to the carpel anlagen and the 
>> carpel primordia, and these expression patterns of DL are consistent 
>> with its specific role in carpel development.'
>>
>>
>>
> 


-- 
Pankaj Jaiswal
G-15, Bradfield Hall
Dept. of Plant Breeding and Genetics
Cornell University
Ithaca, NY-14853, USA

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